[Germ.]—A minute unicellular organism, either animal or vegetable; a micro-organism; a microbe.
Germicide.—An agent having the power to kill germs.
H
Host.—An animal or plant in or upon which another organism lives.
I
Immune.—Not susceptible to a particular disease; also, a person who is not susceptible to a particular disease.
[Immunity.]—The state in which an individual is not susceptible to a particular disease.
Immunize.—To render immune.
Incubation.—The interval between exposure to an infectious disease and the first appearance of symptoms.